VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP

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Summary

CVECVE-2026-48132
StatePUBLISHED
Assignercheckpoint
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-26 14:16:38 UTC
Updated2026-05-26 19:09:11 UTC
DescriptionThe Security Gateway does not correctly validate a length value in certain IKE packets when NAT-T is used (4500/UDP). As a result, a specially crafted or malformed packet can cause the VPN processing service to terminate unexpectedly, leading to denial of service (temporary interruption of VPN negotiations/traffic).

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000550000 probability, percentile 0.173680000 (date 2026-05-28)

Problem Types: CWE-125 | CWE-125 CWE-125: Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Checkpoint Quantum Security Gateway affected R82.10 with Jumbo Hotfix Take 6 or below Not specified
CNA Checkpoint Quantum Security Gateway affected R82 with Jumbo Hotfix Take 91 or below Not specified
CNA Checkpoint Quantum Security Gateway affected R81.20 with Jumbo Hotfix Take 127 or below Not specified
CNA Checkpoint Quantum Security Gateway affected All releases from R81.10 and below Not specified

References

ReferenceSourceLinkTags
support.checkpoint.com/results/sk/sk184982 [email protected] support.checkpoint.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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